Book excerpt: It is difficult to turn on the television or read a news story today without learning about how green and sustainable practices are being implemented throughout society. Libraries are not exempt from these broader trends. In some cases, libraries and librarians have been at the forefront of these efforts. Greening Libraries provides library professionals with a collection of articles and papers that serve as a portal to understanding a wide range of green and sustainable practices within libraries and the library profession. The book's articles come from a variety of perspectives on a wide range of topics related to green practices, sustainability and the library profession. Greening Libraries offers an overview of important aspects of the growing green library movement, including, but not limited to, green buildings, alternative energy resources, conservation, green library services and practices, operations, programming, and outreach.